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Quarterly Selected Financial Data (Unaudited) - Schedule of Selected Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Total Revenue | $ 35,146 | $ 16,884 | $ 16,274 | $ 13,611 | $ 11,491 | $ 13,385 | $ 14,809 | $ 13,379 | $ 81,915 | $ 53,064 | $ 40,958
Total Cost of revenue | 18,501 | 9,254 | 9,203 | 6,593 | 5,367 | 6,588 | 8,394 | 6,917 | 43,551 | 27,266 | 20,031
Gross Profit | 16,645 | 7,630 | 7,071 | 7,018 | 6,124 | 6,797 | 6,415 | 6,462 | 38,364 | 25,798 | 20,927
Selling, general and administrative expenses | 16,448 | 6,321 | 5,993 | 6,110 | 7,061 | 5,921 | 5,993 | 5,696 | 34,872 | 24,671 | 20,480
Research and development expenses | 3,032 | 1,824 | 2,024 | 1,660 | 1,882 | 1,696 | 1,542 | 1,743 | 8,540 | 6,863 | 4,538
Acquisition-related expenses | 462 | 1,611 | 1,613 | 1,449 |  |  |  |  | 5,135 |  |
Other income, net | (881) | 27 | (26) | 7 | 10 | (77) | 4 | (13) |  |  |
Net loss before income taxes | (4,178) | (2,099) | (2,585) | (2,194) |  |  |  |  | (11,056) | (5,812) | (4,181)
Income tax benefit | 75 |  |  |  |  |  |  |  | 75 |  | 311
Net loss before non-controlling interest | (4,103) | (2,099) | (2,585) | (2,194) |  |  |  |  |  |  |
Non-controlling interest | 18 |  |  |  |  |  |  |  | (18) |  |
Preferred stock dividend | (1,084) |  |  |  |  |  |  |  |  |  |
Net loss attributable to common stockholders | $ (5,169) | $ (2,099) | $ (2,585) | $ (2,194) |  |  |  |  | $ (12,047) | $ (5,812) | $ (3,870)
Net loss |  |  |  |  | $ (2,809) | $ (897) | $ (1,116) | $ (990) |  |  |
Net loss per share - basic and diluted | $ (0.18) | $ (0.12) | $ (0.15) | $ (0.12) | $ (0.16) | $ (0.05) | $ (0.07) | $ (0.06) | $ (0.59) | $ (0.34) | $ (0.26)
Products [Member] |  |  |  |  |  |  |  |  |  |  |
Total Revenue | $ 16,462 | $ 11,062 | $ 10,643 | $ 7,249 | $ 7,171 | $ 9,044 | $ 10,784 | $ 9,898 | $ 45,416 | $ 36,897 | $ 23,552
Total Cost of revenue | 11,454 | 7,227 | 7,062 | 4,239 | 4,101 | 5,287 | 7,408 | 5,842 | 29,982 | 22,638 | 13,453
Services [Member] |  |  |  |  |  |  |  |  |  |  |
Total Revenue | 18,684 | 5,822 | 5,631 | 6,362 | 4,320 | 4,341 | 4,025 | 3,481 | 36,499 | 16,167 | 17,406
Total Cost of revenue | $ 7,047 | $ 2,027 | $ 2,141 | $ 2,354 | $ 1,266 | $ 1,301 | $ 986 | $ 1,075 | $ 13,569 | $ 4,628 | $ 6,578

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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